[ADD] add `project_assignees` add-on

Add a field in ``project.task`` to assign users to task. This
completes ``user_id`` field, that is then considered as the owner of
the task. Assignment becomes optional and can now target multiple
users.

Task: JOI-13
Signed-off-by: Valentin Lab <valentin.lab@kalysto.org>

project_assignees/README.rst

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+=================
+project_assignees
+=================
+
+Add multiple assignees field to project task
+
+Installation
+============
+
+Use Odoo normal procedure to install add-ons to install
+``project_assignees``.
+
+Known issues / Roadmap
+======================
+
+Bug Tracker
+===========
+
+Bugs are tracked on `our issues website
+<https://github.com/elabore-coop/project-tools/issues>`_. In case of
+trouble, please check there if your issue has already been
+reported. If you spotted it first, help us smashing it by providing a
+detailed and welcomed feedback.
+
+Credits
+=======
+
+Images
+------
+* Elabore: `Icon <https://elabore.coop/web/image/res.company/1/logo?unique=f3db262>`_.
+
+Contributors
+------------
+* Stéphan Sainléger <https://github.com/stephansainleger>
+
+Funders
+-------
+The development of this module has been financially supported by:
+* Elabore (https://elabore.coop)
+
+
+Maintainer
+----------
+
+This module is maintained by Elabore.

project_assignees/__init__.py

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+# -*- coding: utf-8 -*-
+
+from . import models

project_assignees/__manifest__.py

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+# Copyright 2022 Stéphan Sainléger (Elabore)
+# License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl).
+
+{
+    "name": "project_assignees",
+    "version": "14.0.0.1.0",
+    "author": "Elabore",
+    "website": "https://github.com/elabore-coop/project-tools",
+    "maintainer": "Stéphan Sainléger",
+    "license": "AGPL-3",
+    "category": "Tools",
+    "summary": "Add multiple assignees field to project task",
+    "description": """
+   :image: https://img.shields.io/badge/licence-AGPL--3-blue.svg
+   :target: http://www.gnu.org/licenses/agpl-3.0-standalone.html
+   :alt: License: AGPL-3
+=================
+project_assignees
+=================
+
+Add multiple assignees field to project task.
+
+Installation
+============
+
+Install ``project_assignees``, all dependencies will be installed by default.
+
+Known issues / Roadmap
+======================
+
+None yet.
+
+Bug Tracker
+===========
+
+Bugs are tracked on `our issues website
+<https://github.com/elabore-coop/project-tools/issues>`_. In case of
+trouble, please check there if your issue has already been
+reported. If you spotted it first, help us smashing it by providing a
+detailed and welcomed feedback.
+
+Credits
+=======
+
+Images
+------
+
+* Elabore: `Icon <https://elabore.coop/web/image/res.company/1/logo?unique=f3db262>`_.
+
+Contributors
+------------
+
+* Stéphan Sainléger <https://github.com/stephansainleger>
+* Valentin Lab <valentin.lab@kalysto.org>
+
+Funders
+-------
+
+The development of this module has been financially supported by:
+* Elabore (https://elabore.coop)
+
+
+Maintainer
+----------
+This module is maintained by Elabore.
+
+""",
+    # any module necessary for this one to work correctly
+    "depends": [
+        "base",
+        "project",
+    ],
+    "qweb": [
+        # "static/src/xml/*.xml",
+    ],
+    "external_dependencies": {
+        "python": [],
+    },
+    # always loaded
+    "data": [
+        "views/project_task.xml",
+    ],
+    # only loaded in demonstration mode
+    "demo": [],
+    "js": [],
+    "css": [],
+    "installable": True,
+    # Install this module automatically if all dependency have been previously
+    # and independently installed.  Used for synergetic or glue modules.
+    "auto_install": False,
+    "application": False,
+}

project_assignees/i18n/README

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+This directory should contain the *.po for Odoo translation.

project_assignees/i18n/fr.po

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+# Translation of Odoo Server.
+# This file contains the translation of the following modules:
+# 	* project_assignees
+#
+msgid ""
+msgstr ""
+"Project-Id-Version: Odoo Server 14.0\n"
+"Report-Msgid-Bugs-To: \n"
+"POT-Creation-Date: 2022-07-26 07:38+0000\n"
+"PO-Revision-Date: 2022-07-26 07:38+0000\n"
+"Last-Translator: \n"
+"Language-Team: \n"
+"MIME-Version: 1.0\n"
+"Content-Type: text/plain; charset=UTF-8\n"
+"Content-Transfer-Encoding: \n"
+"Plural-Forms: \n"
+
+#. module: project_assignees
+#: model:ir.model.fields,field_description:project_assignees.field_project_task__assignee_ids
+msgid "Assignees"
+msgstr "Assignée à"
+
+#. module: project_assignees
+#: model:ir.model.fields,field_description:project_assignees.field_project_task__display_name
+msgid "Display Name"
+msgstr "Nom affiché"
+
+#. module: project_assignees
+#: model:ir.model.fields,field_description:project_assignees.field_project_task__id
+msgid "ID"
+msgstr ""
+
+#. module: project_assignees
+#: model:ir.model.fields,field_description:project_assignees.field_project_task____last_update
+msgid "Last Modified on"
+msgstr "Dernière modification le"
+
+#. module: project_assignees
+#: code:addons/project_assignees/models/project_task.py:0
+#: model:ir.model.fields,field_description:project_assignees.field_project_task__user_id
+#, python-format
+msgid "Owner"
+msgstr "Demandée par"
+
+#. module: project_assignees
+#: model:ir.model,name:project_assignees.model_project_task
+msgid "Task"
+msgstr "Tâche"

project_assignees/models/__init__.py

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+
+from . import project_task

project_assignees/models/project_task.py

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+
+from odoo import models, fields, _
+
+
+class Task(models.Model):
+    _inherit = "project.task"
+
+    user_id = fields.Many2one(string=_("Owner"))
+    assignee_ids = fields.Many2many('res.users', 'assignee_ids_rel', string='Assignees')
+

project_assignees/views/project_task.xml

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+<?xml version="1.0" encoding="UTF-8"?>
+<odoo>
+    <record id="view_task_form2_assignees" model="ir.ui.view">
+        <field name="name">project.task.form.assignees</field>
+        <field name="model">project.task</field>
+        <field name="inherit_id" ref="project.view_task_form2" />
+        <field name="priority" eval="99" />
+        <field name="arch" type="xml">
+            <xpath expr="//field[@name='user_id']" position="after">
+                <field name="assignee_ids" widget="many2many_tags" />
+            </xpath>
+        </field>
+    </record>
+
+    <record id="view_task_search_form_assignees" model="ir.ui.view">
+        <field name="name">project.task.search.form.assignees</field>
+        <field name="model">project.task</field>
+        <field name="inherit_id" ref="project.view_task_search_form" />
+        <field name="priority" eval="99" />
+        <field name="arch" type="xml">
+            <filter name="my_tasks" position="attributes">
+                <attribute name="domain">['|', ('user_id', '=', uid), ('assignee_ids', 'in', uid)]</attribute>
+            </filter>
+        </field>
+    </record>
+</odoo>